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Re: StatefulKnowledgeSessionImpl Serializable
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created by <a href="http://community.jboss.org/people/dondragon2">Donald Walters</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/643659#643659">View the full discussion</a>
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<div class="jive-rendered-content"><p>I made the change to use the MapBasedPersistence with the underlying Map coming from Hazelcast. That seems to work but sometimes I get the following error. I am not sure how that happens but it does when i try to resume a session. I a try the resume a second time it goes through without issue.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>[2011-12-29 00:00:10.769] DEBUG [58] com.uluru.test.jbpm.KnowledgeSessionStore - saving session info org.drools.persistence.info.SessionInfo@59961a07</p><p>[2011-12-29 00:00:10.798] ERROR [313] org.drools.persistence.SingleSessionCommandService - Could not commit session</p><p>java.lang.NullPointerException</p><p>          at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.setState(WorkflowProcessInstanceImpl.java:251)</p><p>          at org.jbpm.marshalling.impl.AbstractProcessInstanceMarshaller.readProcessInstance(AbstractProcessInstanceMarshaller.java:382)</p><p>          at org.jbpm.persistence.processinstance.ProcessInstanceInfo.getProcessInstance(ProcessInstanceInfo.java:134)</p><p>          at org.jbpm.persistence.processinstance.JPAProcessInstanceManager.getProcessInstance(JPAProcessInstanceManager.java:64)</p><p>          at org.jbpm.process.instance.ProcessRuntimeImpl.getProcessInstance(ProcessRuntimeImpl.java:190)</p><p>          at org.drools.common.AbstractWorkingMemory.getProcessInstance(AbstractWorkingMemory.java:1113)</p><p>          at org.drools.impl.StatefulKnowledgeSessionImpl.getProcessInstance(StatefulKnowledgeSessionImpl.java:283)</p><p>          at org.jbpm.persistence.processinstance.JPASignalManager.signalEvent(JPASignalManager.java:24)</p><p>          at org.jbpm.process.instance.ProcessRuntimeImpl.signalEvent(ProcessRuntimeImpl.java:355)</p><p>          at org.drools.impl.StatefulKnowledgeSessionImpl.signalEvent(StatefulKnowledgeSessionImpl.java:321)</p><p>          at org.drools.command.runtime.process.SignalEventCommand.execute(SignalEventCommand.java:91)</p><p>          at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:292)</p><p>          at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.signalEvent(CommandBasedStatefulKnowledgeSession.java:200)</p><p>          at com.test.platform.jbpm.ExecutionController.resume(ExecutionController.java:63)</p></div>
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